html, body {
    position: relative;
    min-height: 100vh;
    background-color: #E1E8EE;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Fira Sans", Helvetica, Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.form-structor {
    background-color: #222;
    border-radius: 15px;
    height: 550px;
    width: 350px;
    position: relative;
    overflow: hidden;
}
.form-structor::after {
    content: "";
    opacity: 0.8;
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-repeat: no-repeat;
    background-position: left bottom;
    background-size: 500px;
    background-image: url("../img/32.png");
}
.form-structor .signup {
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    width: 65%;
    z-index: 5;
    -webkit-transition: all 0.3s ease;
}
.form-structor .signup.slide-up {
    top: 5%;
    -webkit-transform: translate(-50%, 0%);
    -webkit-transition: all 0.3s ease;
}
.form-structor .signup.slide-up .form-holder, .form-structor .signup.slide-up .submit-btn {
    opacity: 0;
    visibility: hidden;
}
.form-structor .signup.slide-up .form-title {
    font-size: 1em;
    cursor: pointer;
}
.form-structor .signup.slide-up .form-title span {
    margin-right: 5px;
    opacity: 1;
    visibility: visible;
    -webkit-transition: all 0.3s ease;
}
.form-structor .signup .form-title {
    color: #fff;
    font-size: 1.7em;
    text-align: center;
}
.form-structor .signup .form-title span {
    color: rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    -webkit-transition: all 0.3s ease;
}
.form-structor .signup .form-holder {
    border-radius: 15px;
    background-color: #fff;
    overflow: hidden;
    margin-top: 50px;
    opacity: 1;
    visibility: visible;
    -webkit-transition: all 0.3s ease;
}
.form-structor .signup .form-holder .input {
    border: 0;
    outline: none;
    box-shadow: none;
    display: block;
    height: 30px;
    line-height: 30px;
    padding: 8px 15px;
    border-bottom: 1px solid #eee;
    width: 100%;
    font-size: 12px;
}
.form-structor .signup .form-holder .input:last-child {
    border-bottom: 0;
}
.form-structor .signup .form-holder .input::-webkit-input-placeholder {
    color: rgba(0, 0, 0, 0.4);
}
.form-structor .signup .submit-btn {
    background-color: rgba(0, 0, 0, 0.4);
    color: rgba(255, 255, 255, 0.7);
    border: 0;
    border-radius: 15px;
    display: block;
    margin: 15px auto;
    padding: 15px 45px;
    width: 100%;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
    opacity: 1;
    visibility: visible;
    -webkit-transition: all 0.3s ease;
}
.form-structor .signup .submit-btn:hover {
    transition: all 0.3s ease;
    background-color: rgba(0, 0, 0, 0.8);
}
.form-structor .login {
    position: absolute;
    top: 20%;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #fff;
    z-index: 5;
    -webkit-transition: all 0.3s ease;
}
.form-structor .login::before {
    content: "";
    position: absolute;
    left: 50%;
    top: -20px;
    -webkit-transform: translate(-50%, 0);
    background-color: #fff;
    width: 200%;
    height: 250px;
    border-radius: 50%;
    z-index: 4;
    -webkit-transition: all 0.3s ease;
}
.form-structor .login .center {
    position: absolute;
    top: calc(50% - 10%);
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    width: 65%;
    z-index: 5;
    -webkit-transition: all 0.3s ease;
}
.form-structor .login .center .form-title {
    color: #000;
    font-size: 1.7em;
    text-align: center;
}
.form-structor .login .center .form-title span {
    color: rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    -webkit-transition: all 0.3s ease;
}
.form-structor .login .center .form-holder {
    border-radius: 15px;
    background-color: #fff;
    border: 1px solid #eee;
    overflow: hidden;
    margin-top: 50px;
    opacity: 1;
    visibility: visible;
    -webkit-transition: all 0.3s ease;
}
.form-structor .login .center .form-holder .input {
    border: 0;
    outline: none;
    box-shadow: none;
    display: block;
    height: 30px;
    line-height: 30px;
    padding: 8px 15px;
    border-bottom: 1px solid #eee;
    width: 100%;
    font-size: 12px;
}
.form-structor .login .center .form-holder .input:last-child {
    border-bottom: 0;
}
.form-structor .login .center .form-holder .input::-webkit-input-placeholder {
    color: rgba(0, 0, 0, 0.4);
}
.form-structor .login .center .submit-btn {
    background-color: #6B92A4;
    color: rgba(255, 255, 255, 0.7);
    border: 0;
    border-radius: 15px;
    display: block;
    margin: 15px auto;
    padding: 15px 45px;
    width: 100%;
    font-size: 13px;
    font-weight: bold;
    cursor: pointer;
    opacity: 1;
    visibility: visible;
    -webkit-transition: all 0.3s ease;
}
.form-structor .login .center .submit-btn:hover {
    transition: all 0.3s ease;
    background-color: rgba(0, 0, 0, 0.8);
}
.form-structor .login.slide-up {
    top: 90%;
    -webkit-transition: all 0.3s ease;
}
.form-structor .login.slide-up .center {
    top: 10%;
    -webkit-transform: translate(-50%, 0%);
    -webkit-transition: all 0.3s ease;
}
.form-structor .login.slide-up .form-holder, .form-structor .login.slide-up .submit-btn {
    opacity: 0;
    visibility: hidden;
    -webkit-transition: all 0.3s ease;
}
.form-structor .login.slide-up .form-title {
    font-size: 1em;
    margin: 0;
    padding: 0;
    cursor: pointer;
    -webkit-transition: all 0.3s ease;
}
.form-structor .login.slide-up .form-title span {
    margin-right: 5px;
    opacity: 1;
    visibility: visible;
    -webkit-transition: all 0.3s ease;
}